WL-2859 Add Vitae categories to the classes.

At the moment the parser understands them and they get persisted to the DB but there is no mapping from existing categories to the vitae ones and search doesn't index them.
WL-2589 Index the Vitae Skills.
WL-2589 Switch to one map set for skills.
WL-2589 Start of mapper for skills.
WL-2589 Move the instance data to the imll.

This is so it can reference other classes that are only available in the impl.
WL-2589 Untested mapper that is hooked in.
WL-2364 Display Vitae subjects in search results.

When displaying the search results facet on the RDF domain/subdomain.
WL-2859 Don't expand out RD to Vitae skills.

This is because most courses are originally tagged with RD, which means most courses end up with alls Vitae skills, making the ability to facet on them a little useless.
WL-2364 For the Vitae skills prefix with code.

The Vitae skills should be displayed with the code as a prefix.
WL-2364 Parse query parameters from the URL.

This allows linking to a search from other pages within the tool. This is to support the Vitae wheel which wants to link to search results pages.

Moved the toggling of CSS to common location.
WL-2465 Add link on homepage to Vitae page.
WL-2364 Add links in top bar.

The top bar soooo needs to be refactored as we have so many links now.
WL-2364 Added the new Vitae page.

This links off to the search page. Everything works except where there is a comma in the term being passed in.
WL-2364 Encode , as \,
WL-2364 Add the heading text to the vitae page.

Remove redundant attributes and center the image.
WL-2364 Correct indentation on page.
WL-2364 Correct link to the vitae page.
WL-2364 Activate link back to home correctly.
WL-2859 Dropped redundant import.
Merge pull request #114 from ox-it/WL-2859

WL-2859/WL-2364 Vitae RDF skills support.